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nurses 无法找到

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 *** Unable to find the ncurses libraries or the
 *** required header files.
 *** 'make menuconfig' requires the ncurses libraries.
 ***
 *** Install ncurses (ncurses-devel) and try again.
 ***

情景: busybox-1.37.0

首先如果 whereis ncurses.h 有结果就说明已安装 ncurses

其次, 它告诉我没找到, 就可以扒它的检测代码了, 在 scripts/kconfig/lxdialog/check-lxdialog.sh 中

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check() {
    $cc -x c - -o $tmp 2>/dev/null <<'EOF'
#include CURSES_LOC
main() {}
EOF
    if [ $? != 0 ]; then
        echo " *** Unable to find the ncurses libraries or the"       1>&2
        echo " *** required header files."                            1>&2
        echo " *** 'make menuconfig' requires the ncurses libraries." 1>&2
        echo " *** "                                                  1>&2
        echo " *** Install ncurses (ncurses-devel) and try again."    1>&2
        echo " *** "                                                  1>&2
        exit 1
    fi
}

把 2>/dev/null 去掉看 gcc 输出发现不是找不到头文件, 而是 main() 的返回类型出错. 加上 int 就可以了